During the last half of the 20th century, animal welfare moved from being a marginal issue to one that began to claim the attention of policy makers. From 1960 to 1985, laboratory animal issues were the main focus of animal advocacy in Europe and North America. But, beginning in the 1980s, farm animal well-being slowly took over as the major focus of animal advocacy organizations.
Rowan, Andrew N.
"Farm Animal Well-being: A Brief Update,"
WellBeing News: Vol. 2
, Article 3.
Available at: https://www.wellbeingintlstudiesrepository.org/wbn/vol2/iss8/3